Door opening and closing means



March 11 5 1924.

u H. JOHNSON DOOR OPENING AND CLOSING MEANS iled Dec.

12 e,; or: 4

Erik H 75/1/1500 atented ar. 11, 1924.

ERIK JOHNSON, 0F PORTLAND, OREGON.

noon ornmne AND CLOSING MEANS.

Application filed'Decemher 14, 1922.

T0 all whom it may concern:

Be it known that I, Er n H. JOHNSON, a citizen of the United States, and a resident of the city of Portland, county of Multnomah, and State of Oregon, have invented a certain new and useful Improvement in Door Opening and Closing Means, of which the following is a specification.

The object of my invention is to provide simply-and cheaply constructed means for opening and closing a door, especially double doors of a garage.

I attain my object by the combination comprising a horizontally movable member having connections to the door or doors; a drum and two cables winding and unwinding thereon, the opposite ends of which cable are fastened to said member whereby the rotation of the drum in one or the other direction will correspondingly open and close the door, and means for locking said drum against rotation.

My invention further embodies a latch for locking the door or doors shut, and means, connected to one of said cables, for lifting and releasing said latch in advance of the operation of those devices actuated by the pull of said ropes, which open and close the door.

Other details of construction, and operation, of my invention are hereinafter fully described, with reference to the accompanying drawings.

In said drawings:

Fig. 1 shows in perspective parts of the framework of the roof and walls of a garage built of wood, and the doors; this view illustrates the construction and operation of my improvement Fig. 2 is a fragmentary sectional side elevation, also illustrating, tho more or less diagrammatically, the construction and operation of my means;

Fig. 3 is an end view as indicated by the line 83 in Fig. 2;

Fig. 4c is an end view as indicated by the line 44 of Fig. 2 made on a slightly larger scale; and

Fig. 5 is a larger scaled detail view, in elevation, as indicated by the line 5-5 of Fig. 2.

The drawings are more or less diagrammatic, but have sufiicient detail to enable any skilled mechanic to build my invention.

Referring first to Fig. 1, (1 represents the framework of the roof of a garage, 6 the Serial No. 606,960.

framework of the door, and c and 0' the doors. To the rafters of the framework of the roof of the garage is fastened a horizontalme nber made up of a channeled piece d, to one end of which are fastened brackets g, g between which is journalled a sheave h. At the opposite end is secured a transverse pin or keeper, 2'. As will be noted from Figs. 3 and 4 the piece d is constructed to constitute a guideway in which slides a travelling block 6 held in place by plates f, f fastened to the piece d. On the travelling block 6 are fastened brackets j, 7" between which is journalled a sheave k.

The brackets j, 7" also hold a transverse pin or stop Z. To the under side of the travelling block e is hinged a latch-bar 772 normally held uplifted by a spring a. This latch bar being hinged permits it to assume the position m so that it will ride over the keeper 2', so that in one position of the travelling-block e the said latch-bar will engage with the keeper 2' as shown in Fig. 2.

To the latch-bar m is attached one end of a cable 0 which leads-around the sheave h, thence over a sheave p, journalled in the bracket 9 fastened to the garage wall to, thence winds on a drum r. The return end 0 of the cable leads over another sheave 1), carried by the bracket g, and is fastened to the travelling block 6 by rods .9 and t which are connected at their ends at and o by hinges.

The drum 0" may be journaled between the wall w and the fixed member a. This member has a hole a in which a locking pin 1' fits. Holes r are disposed radially on one side of the drum 1" so that they will register with the hole .2 and thus when the pin 1" is placed thru one of the holes the drum is thereby locked in position. A bumper spring 00 is mounted at one end of the path of motion of th block 6 so that when the doors are open the block 6 will rest against the spring and thus if the door should tend to be opened too quickly the jar would be taken up by this spring 00.

The operation of my device is as follows: Assuming the doors to be open and the parts arranged as diagrammatically shown by Fig. 1: By rotating the drum 7" in the proper direction the travelling-block is moved in the direction indicated by the arrow y of Fig. 1 until the latch bar m snaps into engagement with the keeper 2' as shown by Fig.2, the spring n serving to hold the latch-bar in such engagement, and thus the doors are locked shut.

I claim:

A door opening and closing means comprising a supporting member adapted to constitute a guideway, a traveling block in said guideway, a keeper at one end of the supporting member, a latch bar pivoted to the traveling block and adapted to engage With said keeper, a spring holding said latch bar in its locking position, a cable element, one end of which is attached to said traveling block and the other being attached to said latch bar, said cable being arranged to r efi'ect the back and forth movement of the guide block, a drum on which said cable Winds, a pulley on the forward end of said block, the end of said cable attached to said latch bar being led forward over said pulley and back under a second guide pulley located under th latch bar and secured to the block whereby a pull on that end of the cable Will cause first the retraction of the latch bar from engagement With the keeper which Will thus release the block and the continued pull Will cause the retraction of the latter.

' ERIK H. JOHNSON. 

